1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280fb2949899496f22bcc7b24685677e17b34b4fb0162ea910d06a68791ee080. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5328ac52-c744-4c23-9411-b58d5de3c830.json and https://artists.proofprofile.net/proofs/artist/5328ac52-c744-4c23-9411-b58d5de3c830.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2728be9e8f3d48f2b4d8e5180438be08a51418ac3b5d847f2e098f58997d62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAVDU2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa8698aa84bd57b3ee467fbd90421793e1584300c15ff804642a9e9294ef924. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAL9S1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da00fc62cfb0d80a0e4ab79a2848f7dff26528b845ffb4add94ea393799d952. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472474435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb8153f38432a17b30a413c13a40b6a85421c842cf06cc9100efb07b806969c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA22Z2000001.
Sónar 25: An advanced music mixtape by Black Coffee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4c9293eae04e9094f8719636ff8ce0b84d7fad23ad3c27fd28d918c4ca596e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEM091800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038b346d93678c5ee6907e10eeb4262405b63e5ea0e687d900bd36c0d5cd794a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6dc5af2be720ba6654899e9c3ac855226624fed741a45210d76582d22473d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA671800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84099135ccbe4e7c2060021ab5d4350dc83ae7507848eaa5a24566c79799e322. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEC31850042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c1e2ad6bb94f7a3f59db73dbaf2eac7d5bd9baa676fd23c7f10000b02d18d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01ae63d72e916284058f34a3de46bc262e9b72b8272499830b490c3b3906783. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAVU31700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d200fdece7acc5a6e71a32c826434a75d3bc4e369b599a7f95be8c26ad2e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79d02bc915243c5711cd4b55fa755594aee3d5e0719bf8c0a6bcdf5ff4f3e16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281706470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34842b6fb4626e28a8e7b4b8774fe4240358f09e860c62941ee33d34dbdbd5b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ161800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb82fed0aec20f0c9a9f550a24a1038c901c2a5754d9c07cb4f5181e9662de5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAH91800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633f09aefe5c8b824a1f946b9967f9fbfc9fbee7d508b09eb95a1c363c261812. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8618e4e3ce1d684733c811655ff2740eab0536805c0183bc995a83bfb8974a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848dc7f4075c1767e75eb160fd88f2dbafe0cfbabfa6313c6f4ca62e048a5635. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0b9b67f6153c8be7e0e46b6768e4f04806994df832f8eb36e9c37e18865869. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA3E31600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cdee065c74d9eb2c54191cd49b30e05e5bc5bc979572d6e059a6329f0eed0e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1810832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ddea76ce7650cf6f63aed68e0e78598d429c6931afff6acb26c5897e4ade7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201797128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea16b7e51ba848bf31767bb5bf0433edd0a15a00b027626bdfe9cf599b284ee1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89d49647d6b6f2d0ebc39c65ecb003409216ba5c4a7c61d53eee65fde31d99c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd03cea95365e2ce0a0a246e4dc6c6f7f203af13b391cbac8412e94c0b944afa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094406fa1840d0a4e831d6395cb015893a281f7136e9b3d3c0249e8b5d4d19ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd690b353fd4513d6675e9f6040a13561b8c78a6fac875d48f036a8635f3046. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe31640ee866abca31b7b1c1a9f9bc71989b93717be94c5a71c78e1babe6b439. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9c75aa2f2c88a3eb6e84217b6d08e1f81c876dc51b25b08a1514150a81d853. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e5377778f7a7a90a4441627463b52c5827f8bb4ec573798259c85476b1ecc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c82e0f490c17bc946dd23cf06db7ac979984b69e15722d32e3f19b9fbc8bea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e64c43c8f9636b6d2869121f4e740b82d0bdc209a9f0574d45d34b717308f1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32d9bb7e19ba17bb30beef6ab7382a85198d9ee37337cec23b297fdb4fd7a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAZ642100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f50ee576675e5a738bd68f7b0fe0ab8c7dbfe6bf6e312af39be9e2c6912e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAY362100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e2f45cdca930859ecad25bdd7c91c91324d9ca3770382c487a97c75eb024cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAY362100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e28352320189c8700d7ddaa3019541e0aeee1709bb23d81be8bf4bfe92cfac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72100867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39185a8d1dd8fcf0f80d1355bff06eed6997326819f55a7987238746b4319f17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72300932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262d8bf2cb4752f2b30809700a623d5aaa05e57014cb470c1e3e8e4faa9fe1ec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBE72300904.
Amabele (feat. Deep Narratives, TNS and Blaqrhythm)